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Geochemical and geochronological arguments for heterogeneous nature and complex development of Variscan lower continental crust: Náměšť Granulite Massif (Bohemian Massif, Czech Republic)

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F12%3A00000075" target="_blank" >RIV/00025798:_____/12:00000075 - isvavai.cz</a>

  • Result on the web

    <a href="http://geolfrance.brgm.fr" target="_blank" >http://geolfrance.brgm.fr</a>

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Geochemical and geochronological arguments for heterogeneous nature and complex development of Variscan lower continental crust: Náměšť Granulite Massif (Bohemian Massif, Czech Republic)

  • Original language description

    The felsic granulites of the Náměšť Granulite Massif represent a subducted Early Devonian continental crust, while the associated tholeiitic metabasites were probably generated during Cambro?Ordovician rifting. Based on these characteristics and contrasting P?T data we adopt a model of lower crustal relamination of low-density continental crust below autochthonous dense mafic root of the Moldanubian Continent. The difference in Zrn ages attributed to the HP metamorphic climax between the Náměšť granulite (~353 Ma) and other granulite massifs (~340 Ma; e.g., Wendt et al., 1994; Kröner et al., 2000; Friedl et al., 2011) is interpreted in terms of diachronous emplacement and different time scale of thermal maturation of western and eastern portions of therelaminated crust. Our work also shows that the mantle was refertilized before its incorporation into the crust, a feature typical of asthenospheric mantle below slow spreading rifts. Therefore, it is very likely that the Late Devonian h

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    DD - Geochemistry

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GAP210%2F11%2F2358" target="_blank" >GAP210/11/2358: Granulitization of the Moldanubian lower crust: geochemical constraints on protoliths and metamorphic changes in course of the Variscan orogenic cycle</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2012

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    Géologie de la France

  • ISBN

    978-2-7159-2535-9

  • ISSN

  • e-ISSN

  • Number of pages

    2

  • Pages from-to

    132-133

  • Publisher name

    BRGM, SGF

  • Place of publication

    Orléans

  • Event location

    Sassari

  • Event date

    Jan 1, 2012

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article